Cap or handle



April 1, 1924.

N. B. PARSONS GAP OR HANDLE Filed July 20. 1921 n.' A j? Patented pr. 1,1924.

UNITED STATES PATENT oFFlcE.

NE'WEIJL IB. PARSONS, OF CHICAGO, ILLINOIS, ASSIGNOR TO BELDENMANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS.

CAP OR HANDLE.

Application filed .Tnly 20, 1921. Serial No. 486,230.

To all whom it may concern:

Be it known that l, NnwnLL B. PARSONS, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Caps or Handles, ofwhich the following is a specication.

My invention relates to improvements in caps or handles, and has specialvalue in connection with caps or handles which require manipulation byhand and which are normally attached to parts subjected to a relativelyhightemperature.

The-principal objects of my invention are to provide a cap or handle ofthe class described, so organized that the exterior may be composed ofmaterial of relatively less heat conductivity thanmetal and which willalso present an ornamental appearance; to provide an article of theclass described the exterior of which may be molded into any convenientand ornamental form; to provide an article of the class described whichmay be conveniently detached from the member or device to which thearticle is applied and which is fitted with a metal-to-metal connectionwhereby the article may be removed without impairing the t or strengthof the parts; to provide an article of the class described, so organizedthat, with the same moldffor 'makingthe outer or ornamental portion ofthe article, many ldilferent styles and sizes of inserts or connectingmeans may be employed, thereby eliminating the necessity of providing avariety of styles and sizes of molds; to provide an arrangement wherebythe moldable part may be made separately and the connector or insertsubsequently secured thereto; and, in general, to provide an improvedcap or handle of the character referred to.

f In the drawings, which illustrate a specific embodiment of myinvention and its applicationto filler caps for automobile radiators-Fig. 1 is a plan view of the cap;

Fig. 2 is a section taken on the line 2-2 of Fig. 1;

Fig. 3 is an under-side plan view of said cap; and s i Fig. 4 is afragmentary section through the shell just after removing from the moldand prior to assembly of the cap-parts.

Referring to the drawings, it will be observed that l have shown aconventional form of neck or pipe 10 which projects from thetop of anautomobile radiator, said pipe 10 1n the present instance beingexternally threaded, as shown Vat 11. The cap in ap-` The outer shell orexterior portion 13 of i said cap is constructed of bakelite or con'-densite, or similar material which, by means of heat. and pressure, iscapable of being transformed into a dense, heat-resistant, andpermanently hard body. Said moldable material is relativelynon-conducting; that is to say, its coeliicient of heat conductivity isconsiderably less than that of the average metal, so that when thehandis applied to the shell 13 to detach the cap from the radiator,there will be no danger of burning or scalding the person. My invention,as will be seen later, eifects a distinct cooling of the shell, wherebythe cap is rendered still more convenient to adjust or handle withoutgloves. i

An important feature of `my invention consists in the assembling of theouter shell 13 and the connector portion or insert 14 ofthe completecap, after the shell portion .13 has'been removed from the mold,.theinserts 14 being made separately. Tov this end I insert inthe moldcavity a plurality (in the present instance three) of inclusions whichtake the form of metallic tubular rivets 15, the heads 16 of said rivetsprojectingwell within the mold cavity during the molding operation, sothat after the cap shell has been removed from the mold, the rivets 15are found to be securely embedded in the shell material, the tubularShanks of the rivets projecting inwardly, as shown at 17 in Fig. 4. Inpractice, I prefer to make the Shell 13 with a central recess andsurrounded by a circumferential skirt or iange 18, said recess receivingthe metallic insert 14 by which the cap is attached to the radiatorsnout 10. The diameter of said recess is preferably somewhat greaterthan the outer diameter of the insert 14, so that there will be somespace between the insert and the inner surface of the outer shell. Ibelieve this to be desirable in View of the difference in coeilicient ofexpansion between the shell y constitutes material and the metal(usually brass) of Which the Vinsert 14 is constructed.

The insert 14 is made in the form of a fiat thimble-like stamping, thelower or open end of Which is externally threaded to fit the threads llon the radiator pipe l0. (If the radiator threads ll are internalthreads, the exterior of the insert 14 Will naturally be threadedinstead of having interior threads,

as in the present instance). A desirable feature vof thespeciiicembodiment herein shown is the making of the insert or thimble i4 withan expanded bottom or root, as shown at 19 which, besides facilitatingthe tapping of the internal threads of the insert, a retainer for theannular gasket 20.

VAs Will be seen by inspection of Fig. 2, the upper Wall 2l of the brassinsert is perforated at three equispaced points in order to admit theshanks of the rivets 15, the edges of said perforations being curledupwardly, as shown at 22, in order to form facings which engage or abutagainst the facing bosses 23 of the shell. It Will be understood thatafter the shell portion of the cap has been molded and completed, theinsert 14 is placed in position inthe shell recess With the shanks 17 ofthe rivets extending through the apertures in the insert, and thetubular shanks, by means of a suitable spinning or upsetting tool, areformed into the shape shown in Fig. 2, thereby securely and rigidlyuniting together the shell and the insert.

The particular cap herein shown is designed to permit the application ofa thermometer of conventional form, as indicated in dotted lines at 24.To this end, I form the shell portion 13 of the cap with a central holefor the purpose of receiving the nipple 25 formed as an integral part ofthe end Wall of the insert. Said nipple 25 is threaded, as shown at 26,in order to receive the threaded neck 27 of the thermometer, saidthermometer having a shoulder or flange 28 adapted to be screwed tightlyupon the faced-o upper end of said nipple 25, thus insuring the capagainst leakage.

The invention is of considerable value from a manufacturing standpoint,especially as applied to radiator caps of automobiles. This is in viewof the many different threads, sizes, and styles of radiator snouts,necessitating a different insert or connecting means for practicallyevery different make of automobile. Vith the method of constructionheretofore generally practiced, in Which the insert and the outer shellWere assembled or united together as an incident to the molding of theouter shell, it Was necessary toV provide a dilferent mold for each caphaving a dif ferent style of insert, Which meant that themanufacturer ofcaps for replacement purposes had to carry in stock a set of molds formanufacturing caps for each make of automobile. Since my inventionenables the same outer shell to be used with many different styles ofinsert, it Will bc manifestthat the large investment due to carrying instock thesevarious sets of molds is considerably reduced.

My improved article possesses several advantages over a similar articlein which the insert is embedded or molded directly into the material ofthe shell. It Will be observed that in my construction there is a spaceprovided between the insert and the outer shell 13, s o that the heatwhich the insert receives directly from the heated i snout 10 of theradiator, is not communicated directly to the shell material but must betransmitted across an air space. Hence, my improved cap is decidedlylcooler than a solid cap constructed according to the old practice.

A difference in the coefiicientof expansion of the metal insert 14 andthe material of the shell 13 has no deleterious effect With myconstruction, for the reason that, there being a free space between theinsert and the outer shell, the insert may contract or eXpandindependently of the shell and there will beno tendency for the latterto split open, dueto the greater expansion of the insert.

The term metallic inclusion is used to describe a metal part such as arivet which is imbedded in the molded material and secured thereto bysuch imbedding.

The herein described details Vof construction are merely yillustrativeof a single applie-ation of my invention, they scope of which should bedetermined by reference to the appended claims, said claims beingconstrued as broadly as possible consistentY With the state of thev art.i

I claim as my invention: l Y

1. In combination, an outer shell of molded material formed With acircumferential flange or skirt, a metallic member molded into the bodyof said shell, and an inner shell attached to said outer shell by saidmember.

2. In combination, an outer shell of molded material formed with acircumferential flange or skirt, a metallic'fastening member molded intothe body of said shell and projecting from the inner face thereof, andan inner metallic shell connected to said member and contacting withsaid inner face.

3. In combination, an outer shell of molded material and formed With acircumferential fiange or skirt, a facing abutment being formed on theinterior surface of said shell, a metal part included in said face, ametallic thimble member loosely fitting Within said shell enclosed bysaid flange and having a portion engaging said face, and means unitingtogether said metal inclusion and said inner thimble.

4. In combination, an outer shell of molded material formed with acircumferential flange or skirt and provided with an inwardly projectingmetallic pin having a head molded into said material, and an innerthimble member apertured to receive the projecting end of said pin, saidpin being provided at its end with means whereby said thimble is securedin said outer shell.

5. In combination, an` outer shell of permanently hard molded materialprovided with a plurality of inwardly projecting headed members includedin said material, saidl members having projecting extensions, an innerthirnble member apertured to receive said extensions and loosely fittingwithin said shell, and means on the ends of said extensions whereby saidthimble is rigidly united to said outer shell.

6. In combination, an outer substantially ca -shaped shell of moldedmaterial provi ed with inwardly projecting metallic inclusions moldedinto its inner face, raised abutments formed at intervals upon saidinner face, and an inner shell resting on said abutments -and secured tosaid outer shell by said inclusions. Y

NEWVELL B. PARSONS.V

